Dutasteride
useful for the symptoms of benign prostatic hyperplasia (BPH); colloquially
known as an "enlarged prostate".[3]

In those who
are being regularly screened 5-alpha-reductase inhibitor (finasteride and
dutasteride) reduce the overall risk of being diagnosed with prostate cancer
however there is insufficient data to determine if they have an effect on the
risk of death and may increase the chance of more serious cases.[4]